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- Altium Designer - PCB Design Software
There are some aspects of PCB design and layout that seem deceptively simple, and yet they have a complex answer that is related to many important aspects of manufacturing. One of these design aspects is the match between PCB via size and pad size. Obviously, these two points are related; all vias have or should have a landing pad that supports the via and provides a place to route traces into a via pad.
However, there are some important sizing guidelines to follow when matching pad and via sizes, and this match is an important element of DFM and reliability. The pad size you choose for your design relates to another important design aspect that is found during manufacturing, known as annular rings. Under the IPC standards, lands for vias are related to the layer count, via hole size, and plating thickness, and the land should be sized so that the annular ring produced during production is sufficiently large.
Every via should have a landing pad on the surface layers where traces can make an electrical connection; the question is how large the via pad needs to be. When selecting an appropriate land size for a via, there are a few places to start looking:. With this in mind, I like to start by picking the via size that will be used throughout most of the board. This is where we need to consider the annular ring size that gets left in the board during manufacturing.
For other types of PCBs, like flex or HDI design , we have different standards on annular rings that might be used to calculate via size. Take a look at the final section in this article to see some other standards governing PCB layout and performance qualification.
If we look at the IPC standards, there is a simple definition of annular rings that applies to external lands and internal lands. You can download the IPC standards document from this link. If you want to go with the more recent IPC standards, you can download it from this link. Here, we have two definitions for annular ring: the distance from the finished hole wall to the edge of the pad external layers , or the distance from the drill hole wall to the edge of the pad internal layers.
When the PCB is passing through fabrication, it will be drilled after the etching process. Due to wander in a CNC drill, there is a chance that the drill does not hit dead center in the via pad.
As a result, there will be some leftover annular ring as shown above. Therefore, the pad size on your vias should, at minimum, be large enough to accommodate any drill wander and leave enough copper leftover to ensure the minimum annular ring shown above is accommodated and does not produce a defect.
If the limits discussed in the tables and image below are violated, then that particular via may be counted as a defect and the board could be scrapped as a result. The minimum via pad diameter is:. Product Class. Class 1. Class 2. Class 3. Class A. Class B. Class C. These additions are ignored in the more modern IPC standard. The goal in applying the above formula and setting fabrication limits is to eliminate the possibility of breakout. This is shown in the image below, where the drill hole lies partially off the edge of the pad.
If the trace is very thin and the pad size is too small, drill wander could cause the drill hit to sever the connection between the pad and trace. Instead, these guidelines state what qualifies as successful fabrication, and the design and manufacturing teams have to work to achieve those goals.
This means the pad size will be the diameter you put into your design tools, plus the fabrication allowance. In the case of Class 3, the pad size needs to be just a bit larger and we need to consider the 2 mil requirement using the finished plating diameter to the pad. Suppose we have a 10 mil drill hole for a via that we want to comply with IPC Class 3.
If the via is plated up to the minimum under thickness in the hole wall 1 mil , we can now use the Class C fabrication allowance to determine the required pad size. For a 10 mil drill hole diameter, we would have an 8 mil finished hole size with a minimum pad diameter of 20 mils on all layers. This calculation uses:. This will also be the easiest way to define your via placements as you route without defining a custom padstack.
The above list of requirements was only derived for through-hole vias rigid PCBs, which will be the dominant via style in most PCBs. If blind vias or buried vias are used, the requirements on annular rings will be different, and they will depend on the fabrication process laser drilling vs. The IPC standards and IPC standards are the basic standards that are most often cited for rigid PCBs, but there are other standards that are specific to different types of boards.
These designs will carry many other manufacturability concerns. The integrated manufacturing tools and the Draftsman utility will automatically create the documentation you need to ensure performance requirements for your product are reflected in your fabrication instructions, including an accurate drill table that specifies drill sizes.
Zachariah Peterson has an extensive technical background in academia and industry. He currently provides research, design, and marketing services to companies in the electronics industry. Prior to working in the PCB industry, he taught at Portland State University and conducted research on random laser theory, materials, and stability. His background in scientific research spans topics in nanoparticle lasers, electronic and optoelectronic semiconductor devices, environmental sensors, and stochastics.
Mobile menu. Explore Products. Altium Community. Education Programs. About Author Zachariah Peterson has an extensive technical background in academia and industry. More content by Zachariah Peterson. Recent Articles. Transmission Line Termination Techniques in High-Speed Design A transmission line is a pair of conductors used to deliver energy in the form of an electromagnetic field.
Most of us are familiar with the wires that lead to our houses to deliver the power needed to operate our lights and appliances. In the context of PCB design, it is a signal in a signal layer on top of a plane or between two planes.
Read Article. However, many pieces of hardware that form the cornerstone of modern electronic devices are still designed on two-layer boards. These boards still require a number of critical design tools that most platforms place in separate programs. How do you go about taking your great idea and turning it into a real design, and eventually into a finished product? There are a number of ways to approach your new design. Any new circuit board can be very complicated, but the right PCB design process methodology helps you get through the design process quickly.
It may seem like the world of PCB design revolves around complex multi-layer high-performance PCBs or other exotic design technologies, but the need for single-sided PCB designs is as great as it ever has been. Their Read Article. Sometimes it seems like a race to be the first person to wire everything in your house onto PCBs. With the multitude of possible device shapes and sizes, circular or rounded PCBs are becoming more popular.
When you work with Read Article. Even though you need a PCB manufacturer to fabricate and assemble your board, you need to implement design for manufacturing DFM to ensure your board can be manufactured at scale. Making sure your design is manufacturable is all about encoding DFM specifications in your design rules. With the rules-driven Read Article. A PCB design package that incorporates a propagation delay calculator as part of your design rules makes it easy to compensate for propagation delay, allowing you to focus on routing and signal integrity, rather than manually adjusting traces and calculating Read Article.
For over 30 years the printed circuit board design and manufacturing industries have relied on Gerber files to transfer PCB image information from design to manufacturing. This Read Article. Back to Home. Get Altium Designer for free for 2 weeks.
- First Impressions Migrating to Altium Designer 18
Released: 16 November - Version: Release Notes for Altium Designer Version This new Altium Designer release continues to deliver new features as well as enhancements to the software's core technologies, while also addressing many altium designer 17 vs 18 free raised by customers through the AltiumLive Community's BugCrunch system.
Along with delivering a range of new and exciting features that develop and mature the existing technologies, it also incorporates a large number of fixes and enhancements across the software as a whole, основываясь на этих данных designers continue to create cutting-edge a,tium technology. It is not possible to update to Altium Designer 17 from an earlier version, a new installation is required. You have the choice to continue with your current version, or to install Altium Designer Alternatively, have both installed side-by-side, and use the version that best suits your needs.
The holy grail of PCB routing is to be able to apply the brains and power of an autorouter to multiple nets simultaneously, under the control of a skilled designer. After all, the results from an autorouter can often leave the designer somewhat deflated, and wishing they had routed manually in the привожу ссылку place.
This is the challenge that ActiveRoute - the new kid on the interactive routing scene - sets out to achieve. ActiveRoute is an automated interactive routing technology that delivers high-speed, multi-net, multiple layer routing. It allows the designer to interactively route altium designer 17 vs 18 free of nets by selecting connections directly in the workspace - itself a new arrival in this versionwith the optional ability to define a route path or guide, to marshall and contain the routes, as they flow from origin to target.
Altium Designer Applied to selected tracks, the tool endeavours to improve the quality of the overall route defined by those track segments involved. And while its functionality in alfium release is embryonic to start with - for example it does not include arcs, and does not observe pad entry design rules - it's a powerful beginning, and altijm that will continue to be refined and enhanced over future releases.
When a high-speed signal travels between PCB layers through a copper barrel, it can be distorted. If the signal layer usage results in a stub being present, and the stub is long, then that distortion can become significant.
This is a technique used to remove the unused portion, or stub, of copper barrel from a what is muse cc 2018 in a printed circuit board. Most commonly used for vias, and also for press-fit backplane connectors, back drilling provides a cost-effective solution to help manage the altium designer 17 vs 18 free quality for high-speed signal paths.
With a fresh, intuitive user interface, you are able to generate all manufacturing data for your project simultaneously - so no more having to switch and release individual configurations of the project for fabrication data, assembly data, eesigner source, etc. The releaser also provides the ability to generate the assembly data for multiple variants of your board design, at the same time altium designer 17 vs 18 free what gets released is down to you, with all data items generated as part of a single release process.
You don't even have 1 worry if you haven't created Output Job files - it'll do that altium designer 17 vs 18 free you if you ask it to! With the new Project Releaser, you'll be able to generate your manufacturing data with simplified ease, and with the highest integrity. From simplification of the minimum clearance matrix, and the ability to check clearances between split planes, to hole-to-primitive clearance checking, and checking for bad connections as part of the Un-Routed Net rule, these improvements collectively enhance your ability to constrain your board designs exactly as needed.
Polygon pours are a desugner of most board designs, but their modification in Altium Designer's PCB Editor has become a little dated. Desired shapes are often hard to create the first time and editing through movement of vertices can quickly become frustrating - often ending up with more altium designer 17 vs 18 free sometimes unplanned vertices than you started with.
With Altium Designer Adding to the support of string Parameters at the project, document and schematic level, Altium Designer 17 now offers shared Parameter support for component footprints in the PCB domain. User Parameters defined for components in the schematic space are now transferred to the corresponding component footprints in the PCB layout via a configurable Engineering Change Order ECO.
This includes altium designer 17 vs 18 free new Lasso Selection feature, that enables you to select and deselect objects through a defined free-form lasso, and Smart Drag Selection, where selection functionality changes depending on the direction of a dragged rectangular selection area.
Collectively, these enhancements allow you to select the design objects you need in quick time, and with minimal effort. Cross-Probing and Cross Selecting are powerful search tools within Altium Designer that help locate objects in other editors by selecting the object s in the current editor. In Altium Designer, a view configuration is a snapshot of display settings that you can configure, save and load as required.
The View Configurations dialog is used to configure and enable the special and system layers of your design. Rather than a blanket replacement of the current layer stack with the one being loaded, you now have the ability to control how the layers will be added, effectively performing a merge of the two stacks, to arrive at the desired stack setup.
With the release of Altium Designer 17, the Draftsman documentation system includes a range of enhancements adobe photoshop cc 2015 manual additional features that add to its flexibility while improving drawing efficiency.
These include new dimension options, additional drawing object properties, support for Back Drilling, improved rendering performance, and more. The generator makes it easier to prepare your pick and place text file without always needing to perform post-process functions. Among other functions, you can filter components by parameters by layer, type, or footprintcustomize columns, and set the type of units and output format.
Altium Designer 17 features several Mixed Simulation enhancements, including the newly introduced Probe Manager. Configuring probed waveforms from the Probe Manager allows designers to display plots as desired without the need to manually add or modify waves post simulation, bringing sesigner flexibility and control to mixed simulation.
With the Probe Managerdesigners can also use probes and active nets to select waveforms to display. Along with altium designer 17 vs 18 free other enhancements for Mixed Simulation, Altium Designer aaltium allows users to easily create and manage multiple Simulation Profiles. Simulation profiles can also be added to Output Jobs.
Use the Profile Manager to organize profiles and easily use probes or active nets to select waveforms to display. With Altium Designer 17 comes added functionality for Mixed Simulation, including the ability to copy charts. This allows designers to easily share information from probe analyses in the form altium designer 17 vs 18 free ссылка на подробности PNG image.
Having numerous suppliers altium designer 17 vs 18 free which to search is integral to having the optimal parts for your designs. You also now can choose the altium designer 17 vs 18 free in which you want to search for your desired parts and your desogner currency. You can use the Altium Parts Если adobe flash professional cs5 free 32 bit free инфу! region of the Data Management - Suppliers page of the Preferences dialog to select your options for part suppliers.
The Import Wizard is a quick and simple way to convert your design files from other vendors to Altium Designer files. The Wizard walks you through the import process, handling both the schematic and PCB parts of the project, as well as managing the relationship between them. Altium Designer, in conjunction with Altium Vault 3. Such Items can be created directly within the target vault, or through release of the current stack definition, in the PCB Editor's Layer Stack Manager dialog.
In addition, a managed Layerstack Item can be used as a configuration data item in one or more defined Environment Configurations. Project Templates stored in the Vault are fully version controlled and lifecycle-managed, and can include the common document and file types that make up an Altium Designer Project, including additional reference documentation and configuration files.
This allows you to more fully describe and support a нажмите чтобы узнать больше, in a centralized fashion, while reducing the reliance on external storage mediums shared network drives for example. Storing datasheets next to the very items that need to reference them also means you no longer need to have a live internet connection, to consult a reference document that can often, and frustratingly, disappear without warning at the whim of the hosting website!
Such Items are created directly within the target vault. This also allows an organization designwr manage and distribute ratified, custom script projects to Altium Designer /64607.txt through administrative control.
This is especially useful, and needed, for components that use multiple footprint models, allowing altium designer 17 vs 18 free to get the footprint you need, by default, when the component is placed into a design rather than one picked at random.
Any number of footprint model links may be specified, and this will be a welcome feature for those wishing to create components that reference 3 footprints, satisfying the IPC requirements for different density levels L least or minimum copperM most, or maximum copperand N nominal, or median copper.
As 1 allows any file to be added to an OutJob, native Altium Designer files can also be included in specific release categories such as Fabrication or Assembly data. Altium Designer works with Managed Projects by providing simplified, direct access to the Vault-based project data, and also offers a host of advanced new project management features. Within the Vault, a Managed Altiym is inherently associated with its released production data, with both the design source and manufacturing output available from a single unified location.
The GUI to this process - the Library Migrator rfee - presents an intuitive flow that takes initial selected libraries, and migrates them to a target Altium Vault. And while the migration process can be configured - giving you enhanced control over how that migration is performed - at its most simplistic, you can simply accept the default settings and set the migration in motion within a matter of clicks. The Altium Vault 3. In Altium Designer Altium designer 17 vs 18 free when placing components from such an Integrated Library, the actual links are back to the Component Items in the vault.
This gives you the ability to altium designer 17 vs 18 free use your company's vault components in an offline fashion, while ensuring the design still maintains a true connection to those components in the source vault. The Item Manager provides a fast and effective way to convert a PCB project to one that uses fully managed library components from a centralized Altium Vault.
This ability - essentially validating that vault components in a design are all up-to-date desibner using the latest revisions of their parent Component Items - can be checked as part of project compilation. At the heart of this checking is the Component revision is Out altiuj Date violation type, part of the category: Violations Associated with Components. Configure кажется microsoft office 2010 product key/activation key 64 bit free вот reporting mode for this check on the Error Reporting tab of the Project Options dialog.
New in Altium Designer. Using Altium Documentation. Now reading version For the latest, read: New in Altium Designer for version Read more Many of freee new features and enhancements summarized here require the latest release of the Altium Vault - Altium Vault 3.
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ActiveRoute The holy grail of PCB routing is to be able to apply the brains and power of an autorouter to multiple nets simultaneously, under the altium designer 17 vs 18 free of a skilled altium designer 17 vs 18 free.
New Project Releaser Altium Designer You don't even have to remember to increment Item Revisions, it's all handled for you. Offline Mode - releasing all generated data into a folder-based structure, all wrapped up in a single Zip file.
Design Rules Improvements Altium Designer Selection and Display Improvements Altium Designer Dynamic Cross-Probing and Cross-Selecting Cross-Probing and Cross Selecting are powerful search tools within Altium Designer that help locate objects in other editors by selecting the object s resigner the current editor. View Configuration Enhancements In Altium Designer, a view configuration is a snapshot of display settings that you can configure, save and load as required. Draftsman Enhancements With the release of Altium Designer 17, the Draftsman documentation system includes a altim of enhancements and additional features that add to its flexibility while improving algium efficiency.
Simulation Profiles Along with its other enhancements for Mixed Fref, Altium Designer 17 allows users to easily create and manage multiple Simulation Profiles. Supplier Enhancements Having numerous suppliers from which to search is integral 177 having the optimal parts for your designs.
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